File transfer cable doe not recognize computer when connected to usb hub

1. Confirm the USB port on the computer you are connecting your printer to is being recognized by your computer. The easiest way to do this would be to plug a known good USB Memory stick into the USB port you want to use. If you can read the contents of the USB Memory stick then the port should work. Remove the Memory stick, start the printer installation program (Make sure you don't the printer connected), want until the setup program tells you to connect the printer before you attach the Printer's USB cable.
If the printer isn't recognized try a different USB port, when picking a new USB port to try select a higher priority port, for example in increasing priority from, an external USB hub, a powered external hub, a monitor based hub, USB ports on the front of the computer, up to the USB ports at the computer rear. For USB ports on the same circuit select an USB 2.0 before an USB 3.0 port

Sir/Madam

1. Is the printer turned on?
Make sure the printer is turned on.
Make sure the power cord is securely plugged into the electrical outlet.
Test the power by plugging in the power cord of another electrical appliance to an electrical outlet and turn it on. If the power to the other electrical appliance comes on, the printer may be considered to be faulty.
If this product is recognized:
Close this page to return to the installation window.
If this product is not recognized:
Proceed to the next step.
2. Are your computer and the printer correctly connected?
Make sure the USB cable is securely connected to the printer and to your computer and check that the USB cable is not damaged nor badly crimped.
The printer will not be recognized during the driver installation if connected to a printer switch or the printer buffer. If this is the case, try to directly connect the printer to your computer using the USB cable.
If you are connecting the printer to your computer via a USB hub, connect the printer to the first-tier hub from your computer. If the printer driver is still not recognized on your computer, try to directly connect the printer to your computer without the USB hub.
If you are connecting the printer to your computer via a USB hub, make sure the USB hub device is recognized by your computer.
If this product is recognized:
Close this page to return to the installation window.
If this product is not recognized:
Proceed to the next step.
3. Does your computer provide USB or IEEE 1394 support?

If Still Your Problem Is not solved Then Click On Below URL
http://files.support.epson.com/htmldocs/r1800_/r1800_rf/dset_1.htm

Or

Still You have problem Then please Follow Us On HP Printer Support

Transferring files by connecting the camera
as a removable disk
Connect the camera to your computer as a removable disk.
1 In Shooting or Playback mode, press [m].
2 Select Settings - PC Software - Off.
3 Turn off the camera.
4 Connect the camera to your computer with the USB
cable.

Transferring files with Intelli-studio
Intelli-studio will start automatically when you connect the camera
to your computer with the USB cable.
The battery will charge while the camera is connected to a computer with the
USB cable.
1 In Shooting or Playback mode, press [m].
2 Select Settings - PC Software - On.
3 Turn off the camera.
4 Connect the camera to your computer with the USB
cable.
5 Turn on the camera.
• The computer recognizes the camera automatically and
Intelli-studio launches automatically.
6 Select a destination folder on your computer, and then
select Yes.
• New files stored on the camera will automatically transfer to
the selected folder.
• If your camera has no new files, the pop-up window for saving
new files will not appear.


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Change the USB port. If you are connecting it to front USB of your computer, try connecting it to USB port at back of computer..

The cable might be fauty.

The keyboard will NOT show up on MY COMPUTER as it does not have memory to record and save MIDI files... It will PLAY them real time as the computer sends the data to the keyboard. You can't transfer and save the files IN the keyboard. Some higher level keyboards do have memory and even hard drives... this one does not. This one will have some built in,that you can play but even those you cannot access as if they were memory.
With the USB cable connected, you should be able to see the device listed in the device manager section of the control panel under system hardware.

your data cable is not correct or damaged you need to buy a new data cable from one of the mobile shop. it comes with it's driver cd.

i would suggest a USB transfer cable

here is a link to a good one

CLICK HERE

it is not appering in my copmuters but it is charging.

1. Turn on the camera.
2. Insert the recording media containing the pictures into the camera.
3. Depending on your camera, set the USB Connection or Transfer mode setting in the menu to the Mass Storage , Normal , or PTP .
4. Use the USB cable supplied with the camera to connect the camera to the computer. IMPORTANT:
   
   • Connection through a USB hub or other USB device -- such as a printer or keyboard -- is not supported and cannot be guaranteed. Connect the camera directly to a USB port on the computer.
   • If the USB connection from the camera is not recognized by the computer, disconnect the USB cable and repeat steps 4 and 5 using a different USB Connection or Transfer mode setting. If the connection is still not recognized, further troubleshooting is available.
   
   NOTES:
   
   • The computer will automatically install the USB driver for the camera.
   • When the camera connection is established, an AutoPlay window will appear.
   
   
5. In the AutoPlay window, click Import pictures .
6. In the Importing Pictures and Videos window, click the Import button. NOTE: After the pictures have been imported, the Windows Photo Gallery window will appear and display thumbnails of the imported images.
   

If this doesn't work there is an updated driver available

Here


(from Sony Website)

Hi
Im not sure you can transfer over a USB cable with different OS and filesystems. easiast way is to buy a usb harddrive or usbstick copy data to that. or if the old computer have a networkcard to transfer over a crossover cable or true a network Hub/switch..